St Ceinwen's Church, Llangeinwen, is a Grade II* listed building in Anglesey, north Wales. It is from the neighbouring St Mary's Church, Llanfair-yn-y-Cwmwd.
The historic environment service of the Welsh government, Cadw, says that:
Named for St Ceinwen, the church is located within an enclosed churchyard on the NW side of the A4080, 800m West of the village of Dwyran.